From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Test record comparing the performance of Wells cylinder oil against Prices C oil in car number 60526.
| Identifier | ExFiles\Box 16\1\ Scan015 | |
| Date | 21th July 1911 guessed | |
| 7740 1400 Filled up No 6 car 60526 with Wells cylinder oil (strait from barrel, see sample). Run in the yard for about 1 hr. & also about 5 miles on road. Oil taken out (see sample) very dirty, & brassy. Crank case cleaned. Prices C oil fixed. run 250 miles (fed from lubricator with Prices), oil very good condition (see sample) brasses in good condition. P.T.O | ||